Subflooring



Dec. 14 1926.

c. L. RAMSEY SUBFLOORING Filed July 25, 1924 INVENTEI I; W A T RNEY ill - broken away, of an Patented Dec. 14, 1926.

MNETE srrss PArs'r CLAUDE L. RAMSEY, or TOLEDQ, oi rro, AssIGivoR 'ro THE JENNIsQN-WRIGHT COM- PANY, F TOLEDO, 0310, A CORPORATION or OHIO.

SUBFLOORIN G.

Application filed July 25,

This invention relates to interfitting timbers as a base.

This invention has utility when incorporated in flooring as a base for pavement, whether for directly receiving mastic or for anchoring blocks thereto, especially as in bridge work.

Referring to the drawings:

Fig. 1 is a perspective view, with parts embodiment of the invention in a bridge floor; and

Fig. 2 is a section on an enlarged scale on the line TIII, Fig. 1.

Bridge 1 is shown as having transverse main girders 2 carrying longitudinally extending floor beams 3. Transversely of the bridge 1, and parallel to each other, over these parallel floor beams 3, are disposed flooring strips 1.

These strips 4.- have recesses 5 to holes 6 therethrough in which are disposed bolts 7 as extending through openings 8, and there' engaged by nuts 9 as anchoring means for assembling the flooring strips t with the beams 3. These flooring strips 4 are shown as having, on one side thereof, a tongue 10 having side 11 thereof extending back to bevel 12 as a chamfer from the top surface of the strip 4. The tongue 10 on its opposite side from the chamfer ledge 12 and parallel with the side 11, has therefrom side 13 extending to stop 14. I

This side 13 is of less extent than the side 11.. These interfitting portions of the strip 4- comprising faces 12, 11, 10, 13, 1 1, oppose a set of faces on the adjacent strip 41-. Chamfer face 15 opposes chamfer face 12 and is beveled away therefrom. This face 15 extends to face 16 to ride on face 11 to short of reaching the face 12. Face 17 forming a root of a groove as entered by the tongue 10 extends to face 18 parallel to the face 16. This face 18 extends to face 19 abutting the face 14 as a stop. The side 18 is slightly longer than the side 13, which means that the tongue 10 does not abut the root 17 of the groove.

The faces 16, and 18, as parallel are approximately the same length, so that the groove is of uniform depth on each side, while the tongue is of greater projection on one side than on the other.

As an anchored strip 4 has a second strip 4 driven up thereagainst, the tongue 10 1924. Serial No. 728,202.

rides into the groove 17 until the stop 14- comes against projection face 19. There is left then slight clearance between the end of the tongue 10 and the root of the groove 17.

The faces 13, 18, and 11, 16 ride into snug coacting relation and serve with the stop to lmpede flow of any liquid material from groove 20 downward. The space between the end of the tongue and the root of the groove is a sort of reservoir also for holding impregnating liquid, as creosoting material. As the strips are driven up into the snug inter-fitting position, the bolts 7 may be placed to anchor such strips against shifting, and this flooring, or rather sub-flooring may have placed thereon a mastic 21 compacted or rolled to have anchoring projections 22 in the grooves 20, as Well as additionally anchoring projections 23 in the recesses 5.

The anchoring projections 22 extend transversely of the direction of the bridge traffic, and, accordingly, hold the mastic 21 against tendency to creep. The anchoring projections 23 serve to hold the mastic 21 against tendencies for shifting laterally of the tratlic direction. While in some instances, the traffic surface may be the mastic 21, in other instances it may be desirable to place on such mastic 21, a paving surface as of block 25.

In accordance with the invention herewith, it is thus seen that an effective base for a mastic or block pavement as anchored with a sub-base, is herein disclosed as a subfloor independent of the concrete base. This means that with creosoted timbers there may be a strong and durable sub-floor of minimum dead load effective as an anchoring sub-floor for the topping or paving as desired.

WVhat is claimed and it by Letters Patent is 1. A tongue and groove flooring for traffic comprising strips extending transversely of the direction of the trafiic and having intermediate of said strips a recess, anchoring means in said recess short of filling said recess, said strips having additional depressed portions forming grooves between said strips, and a mastic anchored on said flooring against traffic shifting, said mastic extending into said grooves and recess.

2. A floor comprising a pair of flooring is desired to secure strips having a tongue and groove interiitting connection, said strips having spaced opposing chanifered ledges on the Wear side thereof exposing portion of the tongue and 1 having abutting edges on the opposite side of the strips from the Wear side for determining the extent oi tongue exposure, and :1

plastic covering for the strips supported by the Wear side of the strips anchored against shifting as to the strips by the chamfered 10 ledges along which the covering extends to contact the exposed portion of said tongue. In Witness whereof I atfix my signature.

CLAUDE L. RAMSEY. 

